Type-writing machine



(No Model.) 4 Sheets-Sheet 1,

R. TURNER. TYPE WRITING MACHINE.

No. 597,038. Patented Jan. 11,1898.

"W-Ym (No ModeL) 4 Sh'eets8heet 2.

- R TURNER TYPE WRITING MACHINE.

Patented Jam-11, 1898.

(No Model 4 Sheets-Sheet 3.

R. TURNER.

TYPE WRITING MACHINE.

No. 597,038 Patented Jan. 11, 1898.

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;(N0 Model.) 4 Sheets-$heet 4.:

R. TURNER TYPE WRITING MACHINE.

No 597,038. I Patented Janull, 1898.

6 III/ll mun 11mm W I Q J L I mmmwkw Unrrnn STATES PATENT @rrrcn.

ROBERT TURNER, OF DES MOINES, lOlVA.

TYPE-WRITING MACHlNE.

SPECIFICATION forming part of Letters Patent No. 597,038, dated January11, 1898.

A li ati fil d November 30, 1896. erial No. 614,032. (No model.)

To ctZZ whom it may concern:

Be it known that 1, ROBERT TURNER, a citizen of the United States ofAmerica, residing at DesMoines, in the county of Polk and State of Iowa,have invented new and useful Improvements in Type WVriters, of which thefollowing is a specification.

One of the objects of this invention is to provide a bearing on whichthe platen-carriage may move longitudinally with a minimum of frictionand the necessity for frequent applications of lubricant theretodispensed with and a simple, cheap, and durable carriage-bearingprovided.

A further object is to provide improved means of simple and durableconstruction and easy of operation whereby the platen may be set to berotated either one or two linespaces, or is released so that it may berotated any distance and stop at points between the lines.

Afurther object is to provide simple,strong, and durable means that maybe easily and quickly operated for separating the tensionroller from theplaten to permit the easy passage of paper and for replacing the same inposition to hold the paper firmly.

A further object is to provide means of simplified and cheapenedconstruction for yieldingly pressing the paper holding fingers againstthe platen, and, further, to provide means whereby the out-er fingersmay be quickly adjusted relative to the ends of the platen and securelyheld against inadvertent longitudinal movements.

A further object is to provide an inexpensive marginal. stop device bywhich the return movement of the carriage is limited and which may bequickly and accurately set to stop the carriage at any predeterminedposition. I

A further object is to provide a device for adjusting the tension of thespacing-dogs, which device is of strong and durable con struction andcapable of an easy and at the same time minute and accurate adjustment.

A further object is to provide means that may be easily and quicklyoperated whereby the spacing-dogs are moved a slight distancelongitudinally relative to the platen, so that an impression of a typepreviously made may be shaded by reprinting the same letter in the samespace.

A further object is to provide a printingline indicator having astraight edge that will indicate accurately the li no on which theprinting is being done when the platen is raised, and thus aid theoperator in replacing a previously-printed line in the machine inperfect alinemen t, even though the said printed lines be at other thana right angle to the sides of the paper, and to provide means wherebythe line indicator or gage may be automatically withdrawn when theplaten is lowered, so as to not interfere with the types when printing.

A further object is to provide for this class of machines a paper-tablethat is readily detachable and also designed to fold toward the platenwhen the platen is raised, as required, to permit the platen to pass avertical line, and hence remain in a raised position when placedtherein.

My invention consists in certain details of constructiomarrangement, andcombinations of parts whereby the objects contemplated are attained, ashereinafter set forth, pointed out in my claims, and illustrated in theaccompanying drawings, in which- Figure 1 shows a top View of theplaten-carriage and the carriage operating and controlling mechanism andpart of the type-writer frame. Fig. 2 shows a front elevation of thesame with the carriage raised. Fig. 3 shows an end elevation of the samemechanism, having one of the thumb-wheels that control the movement ofthe platen removed. Fig. 4. shows an inverted perspective view of oneend of the platen and the mechanism for. rotating the platen one or twoline-spaces or for permitting a free rotation thereof. Fig. 5 shows anend view of the mechanism for controlling the rotation of the platen.Fig. 6 shows a vertical section through the line 6 6 of Fig. 5. Fig. 7shows a top view of the device for adjusting the marginal spaces. Fig. 8shows a transverse section of the top of the typewriter frame andcarriage-frame, illustrating in detail the mechanism for operating thepaper-table,the line and space indicator, and the marginal stop. Fig. 9shows a rear elevation of the feed-dog tension device. Fig. 10illustrates the same mechanism and is a section of the shading device,illustrating by dotted lines the movement of same. Fig. 13-shows atransverse section of the carriage, taken along the line 13 13 of Fig.2. 'Fig. 14 shows a detail sectional view to illustrate the mechanismfor movingthe tension-roller relative to the platen. Fig. 15 shows adetail perspective view to illustrate the same mechanism. Fig. ldshows adetail view of the rear face of the scale-bar'to illustrate the slidingconnection of the paperfinger therewith. Fig. 17 shows a detailsectional view of the same through the vertical center of thepaperfingers.

In the following description lshall only describe minutely andspecifically such parts as are newin themselves or are adaptedin shapeand size to cooperate with some of the novel parts. It is to beunderstood that the parts .merely mentioned are ofthe same constructionand perform the function usual to the partnamed in most type-writers ofthis class.

In the accompanying drawings the parts of the frame shown are indicatedby the refer once-numeral 10.

Mounted on thetop of the frame, extended longitudinally thereof,andprojecting slightly beyond the sides of the frame, is a flat trackbar11,having a V-shaped longitudinal groove 12 therein.

13 indicates the frame of the feed-rack, hav ing a track-bar 14 thereon,provided with a V-shaped groove 15 to mate with the groove 12. Two ormore balls 16 are interposed between the two tracks to support theweight of the said frame and brace it against lateral movements and topermit it to move with a minimum of friction. The ballsare confined bypins or screws 17. The said frame is supported against tilting movementsby means of two antifriction-rollers 18, supported upon the bar 11, toengage the top surface of the track-bar 14, and an antifriction-roller19, mounted in a point in the rear of the carriage to admit a guide-bar20, supported by the frame 13. Thus the major part of the weight of thecarriage is carried upon the balls and friction and wear reduced to aminimum.

On the frame 13 is the usual feed-rack 21 and the carriage-tensiondevice 22.

The platen and its accompanying parts are mounted in a suitable frame23, that is hinged to the frame 13, so as to be capable of swingingupwardly beyond a vertical line. A platen 24. of the ordinary kind isrotatably mounted in the frame, and on one of its ends is a ratchet-face25. The means for rotating the platen comprises an arm 26, rotatabl ymounted on the platens shaft and having a sleeve 27 on its lower endthat stands in a horizontal plane with its one end in alinement with theratchet-face 25. lVithin this sleeve is a detent 2S,'normallyforcedtoward the said ratchetface by means of a spring and provided onits outer end with a pin 30, that extends at right angles to thedetentand overlaps the outer surface of the frame 23, for purposes hereinaftermade clear. This arm 26 is held to its rearward limit'bythe spring 31,therefor. hen the said detent is held againstthe ratchet-face and thearm forced forwardly, the platen will be advanced.

For preventing inadvertent movements of the platen and for positivelystopping the same when moved the proper distance by the line-spacinglever I have provided a sleeve 32, fixedto the frame .23, with its oneend close to the ratchet-face of the platen. Slidingly mounted in thissleeve is a detent 33, having on its inner end a roller 34,0f a size tobe admitted between the teeth of the ratchet, and on its outer endbeyond the side of the frame 23 a pin'35 (shown in Fig; 3)to overlap theframe. A post 36 (shown in Fig. 4) projects upwardly from the detentthrough a slot in the sleeve to provide means for guiding the detent. I

A line-spacing lever 37 is fulcrumed to the carriage-frame 23 and isprovided with an arm 38 to engage the arm 26 and a second arm 39to-engage the post 36. These parts are so arrangedthat when the lever isoperated the arm 26 is first engaged and rotated far enough to move theplaten one or two line-spaces. Then the post 36 is engaged and theroller 34. of the detent 33 is forced between two of the ratchet teethand a further rotation of the platen positively prevented. The saidrollerdetent is free to yieldingly engage the ratchet at all times asrequired to prevent its inadvertent rotation, except when forcedthereagainst by the line-spacing lever 37, having an arm 39.

I have provided means for determining the number of line-spaces that amovement of the lever 37 will rotate the platen as follows: 40 indicatesa segmental plate pivoted to the outer surface of the frame 23,concentric with the platen-shaft. At its top is a handle -11, and on itsouter surface is a cam 42, designed to engage the pin 30 of the detent28. lVhen the segmental plate is placed in one position, the said camwill permit the detent to engage the ratchet-face as soon as the spacing-lever is moved. Hence the platen is rotated two linespaces or theentire distance that the limited movement of said lever will permit, andwhen the segmental plate is moved to its second position the cam willprevent the detent from engaging the ratchet-face until it has passedone of the ratchet-teeth. Hence the platen will be moved but oneline-space. It is sometimes desirable to permit the platen to stop atpoints between the lines, and to provide for this I have placed a cam 43on the segmental plate in a position where it may be brought intoengagement with the post 35 on the roller-detent 33, and thus hold saiddetent out of engagement with the ratchet-face.

A screw 44 is passed through a segmental slot 45 in the plate 40 intothe frame 23, and a sliding bolt 46 is mounted in an opening in saidframe and normally forced into engagement with the segmental plate 4-0by a coilspring 47. Three notches 48 are formed in the plate to admitsaid bolt and thus stop the segmental plate in one of three positionsnec essary to move the platen one line-space or two line-spaces or tohold the rollendetent 33 out of engagement with the ratchet'face, andowing to the position of the cam 42 the detent 28 will be in anoperative position relative to the ratchet 25. At the rear of the frame23 is a fixed rod 49 to extend parallel with the platen, and on the endportions of the rod are pivoted the brackets 50. These brackets areyieldingly held in the direction of the platen by the leaf-spring 51. Intheir lower ends is mounted a tension-roller 52 of the ordinary kind.Each bracket has an angular opening 53 therein, and 5% indicates a rodpassed through said openings having its bearings in the frame 23 andprovided with cams 55 to engage said angular openings. A lever 56 on oneend of said rod provides means whereby the rod may be rocked to forcethe cams against the sides of the openings and thus swing the bracketsand the tensionroller away from the platen to permit the ready insertionor removal of paper. Then the flat surfaces of the cam engage the sidesof the openings, the tension-roller and platen are in engagement and thesprings 51 must be compressed slightly before the rod 54; may

be turned. Thus the platen is partially locked when in. its closedposition.

Two arms 57 are pivoted to the tensionroller shaft anda paper-guideplate 58 is fixed to their lower ends. It is normally held in engagementwith the platen by the leaf-springs 50, which are fixed to the rod 49and engage pins 60 on the said arms 57.

At the forward end of the carriage-frame is a scale-bar 01 and above ita round rod 62 to support the paper-fingers. One paper-finger is locatedin the middle of the rod and one on each end portion thereof. Each iscomposed of a sleeveBS, loosely mounted on the rod and having on itsunder side a transversely-bored lug 6e and the flat curved finger 65,fixed to its inner face. In this lug (ll is placed a spring 66 and around-headed bolt 67, that is normally held in engagement with the innerface of the scale-bar. It is desirable that the central finger bestationary as against longitudinal movements and also held slightly outof engagement with the platen. I have therefore provided a slot 68in thesleeve and a screw 69 to pass through the slot into the rod. It is alsodesirable to have the outer bolts 67.

thumb-wheel.

justable and yet are held very securely in any position in which theyare placed. Figs. 13, 16, and 17 show this mechanism quite clearly.

A track-bar '1' 1 is fixed to the forward end of the machine-frame,parallel with the trackbar 11. In this bar a number ofantifrictionrollers 72 are mounted to engage the lower edge of thescale-bar and support the weight of the forward end of theplaten-carriage. On the inner left-hand surface of this trackbar is agroove 73, in which is slidingly mounted a plate 74, having a series ofopenings 75, separated by the distance of one type-space, and also anindicator and stop 76, projecting upwardly therefrom. On the top surfaceof this track-bar, adjacent to the plate 74, is a scale 77,corresponding to the scale on the scale-bar, and a spring-actuated bolt'78 is passed through the track-bar to enterthe openings in said plate74:. On the bar 62, at its left end, is a gravity-stop 79, having on itsleft lower edge a bevel 80. Its other edge is square. In practical usewhen the carriage is moved from the left to the right the said stop 79will engage the stop 76 and hold the carriage, thus determining the sizeof the margin to be left on the paper. hen traveling in an oppositedirectionthat is, from the right toward the left-the said bevel willengage the stop 76, and hence the stop 79 will be forced rearwardly andthe travel of the carriage not interfered with. To set the stop toproduce any desirable size of margin, the spring-bolt 78 is drawnoutwardly and the plate 74 is moved until the stop 76 is in alinementwith the desired point on the scale 77. The sp ring-bolt is thenreleased and will pass through an opening in said plate, and thus holdit in position.

The improved feed-dog mechanism com prises a suitable cast-metal frame8]., secured to the rear of the machine and having the usual feed-dogs82 mounted therein by being fixed to a rod 83. This rod is arranged tobe capable of a slight longitudinal movement, but is normally held toits limit toward the left by means of a spring 8st. At the rear lowercorner of this frame 81 is a rod 85, rotatably mounted, having on itsone end a worm-wheel 8G and in its central portion a pin 87. A secondrod 88 is mounted in the same frame and is provided with a worm 89 tomesh with the wheel 88 and a thum b-wheel 90 on its rear end. It isobvious that a minute and accurate and easy adjustment of the rod 85 ishad by a manipulation of said An arm 91 is pivot-ally mounted on the rod85 to project upwardly therefrom, and a spring 92 is wound upon the rod85, with its central portion overlapping the pin apd its ends inengagement with the said arm to press its upper end forwardly. 93indicates a rod slidingly' mounted in the frame 81, with its one end inengagement with the upper end of the arm 91 and its other end againstthe arm 94, that projects downwardly from the feed-dogs. Thus theresiliency of the spring 92 is used to force the free ends of thefeed-dogs upwardly. In combination with this mechanism just described Ihave provided a device for moving the feeddogs laterally a slightdistance for the purpose of shading the letters by reprinting the sameletter partially in the same space, the latter one a little to one sideof the former one. 95 indicates a rod rotatably mounted in the frame 81and having'a cam 96 on its inner end to engage a collar 97 on the rod towhich the feed-dogs are fixed. A lever 98 on the outer end of said rodprovides means whereby it may be turned. An operation of said lever willobviously bring the cam in engagement with the said collar and force thedogs laterally. When released, the spring 84 will return the dogs totheir normal position.

I have provided a device whereby the operator may accurately place apaper in the machine, so thatfurther prin ting may be done in exactalinement with previously-printed matter or on a designated line, eventhough said line be at other than a right angle to the edges of thepaper. To this end I have provided an upright 99, to be secured to themachine-frame, and a curved arm 100, pivoted in its top to pass underthe platen and engage same with its outer end. Said outer end isprovided with a straight edge 101. A spring 102 is applied to theline-indicator to normally force it upwardly, and said pivotal point isarranged above the pivotal point of the platen-carriage, so that as theplaten is raised the line-indicator will move upwardly in its relationto the platen far enough to present its straight edge on theprinting-line of the platen, and as the platen is lowered it will bewithdrawn, so as to not interfere with the impact of the types againstthe platen.

It is desirable to have the paper-table 103 arranged relative to theplaten, so that as said platen is elevated the paper-table will moverelative to the platen, as required, to permit the platen to turnbackwardly beyond a central line, in contradistinction to a papertablerigidly fixed to the platen-frame. On the under side are two fiatsprings 104:, fixed near the top edge and having their free ends curvedforwardly near the lower edge of the table to provide a detachable andpivotal connection with the rod -19 of the platen-carriage frame.

105 indicate two links pivoted at their upper ends to the ends of thetable and having openings 100 in their lower ends to engage thejournal-pins 107, fixed to the frame 23. Thus the axial point of thetable is eccentric to the axial point of the platelrcarriage and is soarranged that the paper-table will move toward the platen. when theplaten is elevated. This is clearly shown in Fig. 8 and the operationshown by dotted lines.

Having thus described the construction and function of each feature inits turn, what I claim as new therein, and desire to secure by LettersPatent of the United States therefor.

1. In a type-writer, the combination of a bar to extend longitudinallyof the machine-frame and having a V-shaped groove therein, a rollerhaving a grooved periphery rotatably mounted in the machine-frame in therear of the said bar, a sliding carriage, a bar fixed thereto and havinga V-shaped groove on its under surface, bearing-balls interposed in saidgrooves, arms projecting rearwardly from the carriage, a guide-rodsupported thereby to engage the aforesaid grooved wheel, and a series ofantifriction-rollers fixed to the trackbar on the machine-frame toengage the top surface of the track-bar on the sliding carriage-frame,and a platen-bearing frame hinged to this sliding carriage, for thepurposes stated.

2. The combination with a type writer platen rotatably mounted, of aratchet-face on one end thereof, an arm pivoted to the platen-shaft, aspring for normally holding the arm rearwardly, a sleeve on the outerend of the said arm, a detent in said sleeve to engage the ratchet-face,a spring for normally forcing the detent against the ratchet-face, alever fulcrumed to a part of the platen-carriage, having its one end inengagement with said arm, to rotate the same and means for limiting themovement of the lever.

3. The combination, with a type writer platen rotatably mounted, of aratchet-face on one end thereof, an arm pivoted to the platen-shaft, aspring for normally holding the arm rearwardly, a sleeve on the outerend of the said arm, a detent in said sleeve to engage the ratchet-face,a spring for normally forcing the detent against the ratchet-face, alever fulcrumed to a part of the platen-carriage having its one end inengagement with said arm, to rotate the same, means for limiting themovement of the lever, a cam attached to the platen-frame, and capableof a slight movement thereon, and a pin on the outer end of the saiddetent to engage said cam and hold the detent away from theratchet-face.

4. The combination, with a type writer platen rotatably mounted, of aratchet-face on one end thereof, an arm pivoted to the platen-shaft, aspring for normally holding the arm rearwardly, a sleeve on the outerend of the said arm, a detent in said sleeve to engage the ratchet-face,a spring for normally forcing the detent against the ratchet-face, aleverfulcrumed to a part of the platen-carriage, having its one end inengagement with said arm, to rotate the same, means for limitin g themovement of the lever, a rollerdetent mounted in the platen-frameadjacent to said ratchet, a pin projecting therefrom, a spring for normally holding the roller in contact with the ratchet, and an arm onthe said lever to engage said pin and force the said roller intopositive engagement with the ratchet-face at the end of the movement.

5. The combination, with a type-writer platen rotatably mounted, of aratchet-face on one end thereof, an arm pivoted to the platenshaft, aspring for normally holding the arm rearwardly, a sleeve on the outerend of the said arm, a detent in said sleeve to engage the ratchet-face,a spring for normally forcing the detent against the ratchet-face, alever fulcrumed to a part of the platen-can riage, and having its oneend in engagement with said arm, to rotate the same, means for limitingthe movement of the lever, a cam attached to the platen-frame, andcapable of a slight movement thereon, and a pin on the outer end of thesaid detent to engage said cam and hold the detent away from theratchet-face, a roller-detent mounted in the platen-frame adjacent tosaid ratchet, a pin projecting therefrom, a spring for normally holdingthe roller in contact with the ratchet, and an arm on the said lever toengage said pin and force the said roller into positive engagement withthe ratchet-face, at the end of its movement.

6. In a type-writer, a suitable platen, a ratchet-face at one endthereof, a spring-actuated detent normally held in engagement with theratchet, a pin on the outer end of the detent, means for advancing thedetent to rotate the platen, a segmental plate pivoted to theplaten-frame, a cam on said plate to engage the said pin and hold thedetent out of eontactwith the ratchet, until it passes beyond the cam.

7. In a type-writer, a suitable platen, a ratchet-face at one endthereof, a spring-actuated detent normally held in engagement with theratchet, a pin on the outer end of the detent, means for advancing thedetent to rotate the platen, a segmental plate pivoted to theplaten-frame, a cam on said plate to engage the said pin and hold thedetent out of contact with the ratchet until it passes be: yond the cam,a roller-detent mounted in the platen-frame to engage the ratchet-face,a pin on its outenend, a spring for holding it in Contact with theratchet, means for forcing it toward the ratchet when the other detentis advanced to rotate the platen and a cam on said segmental plate forengaging said post for the purposes stated.

8. The combination in a typewvriter, of means for rotating the platen,one or two linespaces, or an. indefinite distance, comprising an armpivoted to the platen-shaft, a springaetuated detent in its end, a pinon said detent, a spring'actuated, roller-detent mounted in theplaten-frame, a pin on the outer end, a lever fulcrumed to theplaten-frame and having arms to engage the aforesaid arm and also saidroller detent, a segmental plate pivoted to the platen-frame, and twocams thereon to be engaged by said detent pins or posts.

9. The combination with a device for rotating a platen one, two, or anindefinite numand two cams on the outer face thereof, for

the purposes stated.

10. The combination with a platen, of two brackets pivoted at theirupper ends to the ends of the platen-frame in the rear of the platen andhaving angular openings therein, a tension-roller mounted in the saidbrackets, yielding pressure devices for holding the roller to theplaten, a rod rotatably mounted in the platen-frame and extended throughsaid angular openings and cams on said rods to engage said angularopenings, and a lever on one end of the said rod.

11. The combination with a platen of two brackets pivoted at their upperends to the ends of the platen-frame in the rear of the platen andhaving angular openings therein, a tension-roller mounted in the saidbrackets, yielding pressure devices for holding the roller to theplaten, a rod rotatably mounted in the platen-frame and extended throughsaid angular openings and cams on said rods to engage said angularopenings, a lever on one end of the said rod, a guide-plate pivoted tothe tension-roller shaft and yielding pressure devices for normallyholding it against the platen.

12. The combination with a platen-frame and a platen, of a sleeverotatably mounted on the platen-frame in front of the platen, a boltslidingly mounted beneath the sleeve at right angles thereto, to engagea part of the platen-frame, a spring for pressing said bolt forwardlyand a paperfinger fixed to the sleeve, substantially as set forth.

13. The combination with a platen-frame and a platen, of a sleeverotatably mounted on the platen-frame in front of the platen, a boltslidingly mounted beneath the sleeve at right angles thereto, to engagea part of the platen-frame, a spring for pressing said bolt forwardly, apaper-finger fixed to the sleeve, and a setsere\v passed through a slotin the sleeve into the sleeve-support, to limit the movement of thefinger.

14. The combination with a platen and a platen-frame, of a round bar inthe platenframe in front of the platen, a bar beneath the said barhaving a flat inner surface and a series of notches therein, a sleeverotatably mounted on the round bar, a bolt slidingly mounted on theunder side of the sleeve, a spring for normally pressing said beltforwardly into engagement with the rear surface of said notched bar, anda paper-finger fixed to the sleeve substantially as set forth.

15. In a type-writer, the combination with a suitable carriage, of a barfixed to the machine-frame, to extend parallel with the carriage, ascale marked on its top, a plate slidt stapes ingly mounted in said barand a stop on said plate, means for securing said plate at any pointrelative to the bar, and a gravity-stop pivoted to the carriage-frameand having a square edge 011 its right side and a bevel on its left forthe purposes stated.

16. In a type-writer, the combination with a suitable carriage, of a barmounted on the machine-frame to extend parallel with the carriage, ascale marked on its top, a perforated plate slidingly mounted on theinner face of said bar, astop fixed thereto, a springactuated bolt inthe said bar to enter said perforations, and a gravity-stop pivoted tothe carriage-frame and having a square surface on. its right edge and abevel on its left, substantially as set forth.

17'. In a type-writer, the combination with a sliding carriage having afeed-rack, of a suitable feed-dog pivotally mounted adjacent to thefeed-rack, an arm projecting downwardly therefrom, a rod pivoted insuitable bearings in the rear of the macl1ineframe, a Worm-gear on itsone end and a pin in its central portion, an arm mounted on said rod andextended upwardly therefrom, a rod slidingly mounted with its one end inengagement with said arm and its other with the arm on the.

feed-dog, and a spring on the said pivoted rod having its centralportion in engagement with the said pin and its ends in engagement withsaid arm on the rod, and a shaft rotatably mounted having a worm-gear onits one end to mesh with the aforesaid worm-gear and a thumb-wheel onits other end, for the purposes stated.

18. In a type-writer having a sliding earriage and a feed-rack thereon,the combination of a pivoted feed-dog, capable of a slight movementlongitudinally of the platen, a spring for normally holding the dog toone limit of its movement and a shaft rotatably mounted in suitablebearings having a lever on one end and a cam on its other end to en gagethe shaft to which the feed-dogs are fixed, substantially as set forth.

19. In a type-Writer having a sliding carriage and a feed-rack thereonthe combination of a rock-shaft capable of a slight longitudinalmovement, a collar th'ereon, a spring for holding the shaft to its limitof movement, a feed-dog fixed thereto, a second shaft rotatably mountedhaving a lever on one end and printingdine on the platen, and a notch ofapproximately one letter-space formed in the said straight edge at theprinting-center of the machine, and a spring to engage the said curvedarm and to yieldingly hold it against the platen, said parts being soproportioned and arranged that when the platen is in its elevatedposition the straight edge on the end of the curved arm will lieparallel with the printing-line of the platen, and when the platen is inits lower position ready for printing the said straight edge will bewithdrawn from the printing-line in a direction toward the pivotal pointof the arm, substantially as and for the purposes stated.

21. In a type-writer, the combination of a sliding carriage, a platenbearing frame hinged to the sliding carriage, a rod fixed to theplaten-bearing frame to extend longitudinally thereof, a paper-tabledetachably and 'pivotally connected with the said rod, and

links pivoted to the ends near the outer edge of the paper-table anddetachably and pivotally connected with the sliding-carriage frame at apoint in the rear of-the pivotal point of the platen-bearing frame,substantially as and for the purposes stated.

22. The combination in a type-Writer having a sliding carriage and aplaten-frame hinged thereto, of a paper-table, two leafsprings fixed toits under side and arranged to detachably and pivotally engage a part ofthe platen-frame, two arms pivoted to the ends of the paper-table anddetachably and pivotally connected with the said sliding carriage,substantially as and for the purposes stated.

ROBERT TURNER.

Vitnesses:

J. RALPH Onwre, THOMAS G. ORWIG.

